The British Health and Safety Executive (HSE) listed this compound as causing occupational asthma. Although potentially defined differently from respiratory sensitizers, HSE used the following description: “Occupational asthma is caused by workers breathing in substances at work that produce a hypersensitive state in the airways - the small tubes that carry air in and out of the lungs - and trigger a subsequent response in them. Not everyone who becomes sensitized goes on to get the clinical disease but once the lungs become hypersensitive further exposure to the substance, even at quite low levels, may provoke an attack.” Steve Smith at DOSH identified this list as compounds that are potential respiratory sensitizers.

5 =

Implied within HSE listing of “cobalt compounds”.

6 =

Implied within the ACGIH AND HSE listings of “flour dust”. The ACGIH listing has a SEN notation..

7 =

Implied within HSE listing of “isocyanates”.

8 =

Possibly limited to the HSE listing of “nickel sulphate”.

9 =

Probably included in the HSE listing of “piperazine”.

10 =

Probably includes the HSE listing of “chloroplatinates and other halogenoplatinates”.

11 =

Partially included within HSE listings of “some hardwood dusts” and “some softwood dusts”.